/Engine/Source/Runtime/Renderer/Public/MeshPassProcessor.h
Use this ctor when DrawPrimitiveId may be != ScenePrimitiveId (i.e., for dynamic primitives like editor widgets)
FMeshDrawCommandPrimitiveIdInfo ( int32 InDrawPrimitiveId, int32 InScenePrimitiveId, int32 InInstanceSceneDataOffset )